fbi agents descended on jessica ridgeway's home on tuesday, with her family's permission. bringing in search dogs and scouring the backyard, as her emotional parents spoke out for the first time. >> you get the pit in your stomach that you don't want any parent, any parent to, to ever experience in their whole entire life. >> it is by far the worst thing i've ever been through. >> reporter: sarah ridgeway says her 10-year-old daughter, jessica, left home on friday morning to meet up with friends for the walk to school. that was the last time she was seen. >> and i need her to walk back through that door. >> wow. want to be on camera? >> reporter: investigators are hoping this video of jessica, first broadcast on "gma," will generate new leads. >> that's on the camera, see? >> may god be calm, and we just ask you to be here. >> reporter: overnight, residents held candlelight vigils for the safe return of the 10-year-old who loves stuffed animals and playing with her dog. >> we know how precious our children are. and we know this could happen to any of us. >> i just can't im